Grass Genera of the World - Descriptions and illustrations of over 800 grass genera by L. Watson and M. J. Dallwitz. Includes synonyms, morphology, anatomy, physiology, phytochemistry, cytology, classification, pathogens, and distribution. Based on the DELTA system adopted by the International Taxonomic Databases Working Group.
Gramineae in the Families of Flowering Plants - Older mirror of the Grass Genera of the World DELTA site at the University of New Orleans. Contains list of genera (without links) and some unique illustrations.
Poaceae in Flowering Plant Families - University of Hawaii - Photos and short descriptions of about 20 grasses important in Hawaii.
World Grasses Database - Kew Royal Botanic Gardens - Downloadable (20 MB) morphological descriptions of some 9000 species coded in DELTA (DEscription Language for TAxonomy) format using approximately 1000 characters. Uses INTKEY software available elsewhere, a program for interactive identification and information retrieval, to generate printed descriptions of species and genera, list the occurrence of particular characters or character combinations, assist in key construction, and make identifications.
Know Your Grasses - Descriptions and ink drawings of over 70 range grasses of Texas. The TEXNAT site is an information database on natural resource management of Texas rangelands. Texas A&M Research and Extension Center in San Angelo.
Pooideae (Poaceae) in Australia - Database under development representing 59 genera and 303 taxa in the subfamily Pooideae (formerly, Festucoideae). Descriptions and illustrations. By C.M. Weiller, M.J. Henwood, J. Lenz and L. Watson. Uses the DELTA System.
Grass Hybrids Database - A cooperative project dedicated to collecting data from interspecies crosses between Gramineae and disseminating these data immediately via the searchable hybrids list database on this website.
Virtual Flora: Poaceae (Grasses) - Photo gallery and descriptions (in Swedish) of Scandinavian grasses. Database (Sök i Riksmuseets samlingar) can be searched by those unfamiliar with Swedish. Grasses are given common names in English, German, and up to four Scandinavian lanuguages, the images can be useful in any language, and the Home Page (Innehållsförteckning) provides accessibility to plant lists using internationally recognizable visual symbols.
Manual of Grasses for North America - Information about and from a project creating a taxonomic account of all grasses that have been found growing without cultivation in the continental United States and Canada plus, many cultivated species grown in the region.
Stipeae - Limited taxonomic information about this tribe of grasses, which includes Achnatherum, Aciachne, Anemanthele, Austrostipa, Jarava, Macrochloa, Nassella, Nicoraella, Oryzopsis, Piptochaetium, Ptilagrostis, Stipa, and Trikeraia.
Forage Grass Species - Fact sheets, cultivar and yield trial information, images, and links to other information about different grasses that are used to pasture livestock animals.
Texas Grasses - Taxonomy, key and descriptions of genera, checklist, anatomy, and glossary.
